New SAT Update to CFDI 4.0 Catalogs: What Businesses Need to Know

The Tax Administration Service (SAT) continues to strengthen Mexico’s electronic invoicing ecosystem with a new update to the CFDI version 4.0 catalogs, published on October 2, 2025.
This update aims to improve accuracy in customs processes and keep patent and validity information current within electronic tax receipts.

What Does This Update Include?

The new release introduces additional relationships in the c_Aduana and c_PatenteAduanal catalogs, impacting the data used by CFDI issuance systems to validate transactions related to foreign trade.

In summary:

• 13 new relationships have been added to the c_Aduana catalog, updating fields such as patent, fiscal year, quantity, and effective date.
• 3 new relationships have been added to the c_PatenteAduanal catalog, corresponding to patents 1930, 1941, and 1946, with effective dates ranging from September 2024 to June 2025.

Important: These changes do not affect the XSD schemas, meaning no structural updates to CFDI XML files are required.

Official Effective Date

All changes published by the SAT take effect on October 3, 2025.
CFDI issuers must ensure that their invoicing systems use the updated catalogs to remain compliant with current regulations.

Impact on Businesses and Technology Providers

While this update does not modify technical schemas, it requires operational attention.
Billing and compliance teams should make sure to:

• Use the most recent catalogs in their systems.
• Validate the correct reference to the updated codes.
• Maintain continuous synchronization with SAT updates to avoid rejections or errors in CFDI issuance.

Keeping Your Fiscal Processes Up to Date with LLB Solutions

At LLB Solutions, we ensure that our Business Central customers always have access to the latest tax updates released by the SAT and other regulatory entities in the region.
Our localizations for Latin America are designed to seamlessly integrate regulatory changes, ensuring compliance and operational continuity without disruption.

Stay Ahead of Tax Changes with Smart Solutions

Ensure the stability of your operations with our Business Central localizations, built to keep your business fully aligned with SAT regulations.

Learn more about our fiscal solutions and stay one step ahead with LLB Solutions.

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